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Finding the Fourth Proportional to 70.27, 104.83 and 69.36

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Solution

The fourth proportional to 70.27, 104.83 and 69.36 is: 103.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70.27 : 104.83 = 69.36 : x
  2. Step 2: Convert to fraction form
    70.27/104.83 = 69.36/x
  3. Step 3: Cross multiply
    70.27x = 104.83 × 69.36
  4. Step 4: Simplify right side
    70.27x = 7,270.44
  5. Step 5: Solve for x
    x = 7,270.44/70.27
  6. Step 6: Final answer
    x = 103.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.